young



G. A. YOUNG.

OVEN WALL.

APPLICATION FILED JUNE 5. 19:6.

Patented Aug. 12, 1919.

2 SHEETS-SHEET l.

G. A. YUUNG.

OVEN WALL.

APPLICATION FILED JUNE 5.1916.

Patented A110'. 12, 1919.

2 SHEETS-SHEET Z.

'Geoxge fawn;

Cutoff/w13 S UNITED sTATEs PATENT oEEioE.

GEORGE A. YOUNG, OF DETROIT, MICHIGAN, ASSIGNOR TO YOUNG BROTHERS COMPANY,

0F DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

OVEN-WALL.

Specification of Letters Patent.

` Patented Aug. i2, ll9ll9.

v Application filed June 5, 1916. Serial No. 101,852.

To all whom t may concern:

.Be it known that I, GEORGE A. YoUNG, a citizen of the United States of America, re-

siding at Detroit, in the county of Wayne edge strips. It is the object of the present invention to increase the eliicien'cy of the heat-insulation, by so forming these sections as to avoid. or limit to the minimum the metallic' connection between the outer andinner walls, while at the same time maintaining the necessary mechanical strength.

In the drawings:

Figures 1 to 5 are perspective views showing portions of modified constructions of my improved oven wall;

Fig. 6 is a horizontal section showing two ofhthe wall sections in engagement with each ot er' v- Fig. 7J illustrates another modification; and

Fig. 8 illustrates a corner construction.

A is the louter wallof the section and B the inner wall thereof, both being formed of sheet-metal and being parallelly-arranged and spaced from each other. C is a cross strip connecting the .inner and outer walls and formihg'in connection therewith a closure for the insulating air space. Instead, however, of connecting this strip so as to form a metallic or heat-conducting bridge between the inner and outer wallsit is arranged inv conjunction with non-metallic heat insulation, which will greatly lessen the heat conductivity.

Thus asp'shown in Fig. 1, the strip C isprovide'd with the flanges D and D', Awhichengage the return-bent flanges E and E- onv the outer and inner walls. There is not, however, directcontact between 'these lianges, but a suitable heat-insulating material, such as asbestos, is placed between the adjacent flanges, as indicated at F and F.

In the construction shown in Fig. 2, instead of a single strip C a pair of complementary strips C andC2 are employed, said strips being in metallic engagement with the outer and inner walls, but having heat-insulation between each other. Thus as shown, the strip C2 has a flange G and the strip C the return-bent flange G2, heat-insulating material H being placed therebetween.

, In Fig. 3, strips C3 and C4 are metallically engaged with the inner and outer walls and extend parallel to each other, heat insulation Ibeing placed therebetween.

InV Fig. '4 the construction is similar to ,Fig. 1,l with the exception that one of the walls has the edge-strip C5 integral therewith, and a flange J on this strip is engaged with the return-bent flange K on the other wall, with heat insulation L therebetween.

In Fig. 5 the complementary strips C and G2 are provided with flanges M and M', which are embedded in insulating material N capped by the channel member O.

With each lof the constructions as above described, a closed air-chamber is formed between the outer and inner walls and the edge-strips, while heat conduction through said edge-strips is retarded by the interposed non-metallic heat insulation. l

If desired, other heat-insulating material may be placed within the closed chamber,

such as indicated at P, to prevent convection by the air and to further increase, the efficiency. t

To form a corner in the wall, the construction may be as illustrated in Fig. 8, in which Q, is an outer angle sheet, R and R are chan'- nel strips, and S is a reinforcing angle or` supporting post. These parts are assembled with heat insulation T'between the adjacent metallic surfaces, so as to limit the heat conductivity.

In Fig. 7 a door construction is illustrated,

in which U is thel door section having the outer wall V thereof hinged at W to the outer wall of the stationary section. An angle strip X connects the outer and inner walls of the door, and heat insulation Y is folded into the seams, as shown.

What I claim as my invention is 1. Ina heat insulating wall, a section comprising inner and outer ,spaced metallic plates and metallic ed' e strips, a flange on one engaging a'returnent flange on the adjacent member, anda sheet of flexible nonmetallic heat insulation clamped between said ange and return-bent flange for forming a sealed joint and interrupting the metallic continuity. et

2. In a heat insulating wall, a unit seetion comprising outer and inner spaced inetallic plates7 one of said plates having a return-bent flange, a metallic edge Strlp eX- tending between said plates and having a flange engaging said return-bent iange, and

non-metallic heat insulation clamped between said flange andy return-'bent fiange for forming a sealed'jointand interrupting the metallic continuity, said joint flanges forming a projecting portion for overlapping an adjoining unit.

In ,testimony whereof I aiX. my signature.

GEORGE A. YOUNG. 

